<% 
Option Explicit 
Response.buffer=true 
Call Com_CreatValidCode("validateCode") 

Sub Com_CreatValidCode(pSN) 
 
Response.Expires = -9999 
Response.AddHeader "Pragma","no-cache" 
Response.AddHeader "cache-ctrol","no-cache" 
Response.ContentType = "Image/BMP" 

Randomize 

Dim i, ii, iii 

Const cOdds = 2  
Const cAmount = 10 
Const cCode = "0123456789" 


Dim vColorData(1) 
vColorData(0) = ChrB(0) & ChrB(0) & ChrB(211)   
vColorData(1) = ChrB(255) & ChrB(255) & ChrB(255) 


Dim vCode(4), vCodes 
For i = 0 To 3 
  vCode(i) = Int(Rnd * cAmount) 
  vCodes = vCodes & Mid(cCode, vCode(i) + 1, 1) 
Next 
Session(pSN) = vCodes

Dim vNumberData(9) 
vNumberData(0) = "1110000111110111101111011110111101001011110100101111010010111101001011110111101111011110111110000111" 
vNumberData(1) = "1111011111110001111111110111111111011111111101111111110111111111011111111101111111110111111100000111" 
vNumberData(2) = "1110000111110111101111011110111111111011111111011111111011111111011111111011111111011110111100000011" 
vNumberData(3) = "1110000111110111101111011110111111110111111100111111111101111111111011110111101111011110111110000111" 
vNumberData(4) = "1111101111111110111111110011111110101111110110111111011011111100000011111110111111111011111111000011" 
vNumberData(5) = "1100000011110111111111011111111101000111110011101111111110111111111011110111101111011110111110000111" 
vNumberData(6) = "1111000111111011101111011111111101111111110100011111001110111101111011110111101111011110111110000111" 
vNumberData(7) = "1100000011110111011111011101111111101111111110111111110111111111011111111101111111110111111111011111" 
vNumberData(8) = "1110000111110111101111011110111101111011111000011111101101111101111011110111101111011110111110000111" 
vNumberData(9) = "1110001111110111011111011110111101111011110111001111100010111111111011111111101111011101111110001111" 
 
Response.BinaryWrite ChrB(66) & ChrB(77) & ChrB(230) & ChrB(4) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) &_ 
  ChrB(0) & ChrB(0) & ChrB(54) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(40) & ChrB(0) &_ 
  ChrB(0) & ChrB(0) & ChrB(40) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(10) & ChrB(0) &_ 
  ChrB(0) & ChrB(0) & ChrB(1) & ChrB(0) 

 
Response.BinaryWrite ChrB(24) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(176) & ChrB(4) &_ 
  ChrB(0) & ChrB(0) & ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & ChrB(18) & ChrB(11) &_ 
  ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) &_ 
  ChrB(0) & ChrB(0) 

For i = 9 To 0 Step -1   
  For ii = 0 To 3  
  For iii = 1 To 10  
     
    If Rnd * 99 + 1 < cOdds Then  
    Response.BinaryWrite vColorData(0) 
    Else 
    Response.BinaryWrite vColorData(Mid(vNumberData(vCode(ii)), i * 10 + iii, 1)) 
    End If 
  Next 
  Next 
Next 
End Sub 
%> 
